Tweak compiler version cutoff for no_sanitize("alignment") support.

tglsfdc · tglsfdc · commit ad2ad698ac16 · 2021-02-12T17:33:14.000-05:00
Buildfarm results show that gcc up through 7.x produces annoying warnings for this construct (and, presumably, wouldn't do the right thing anyway). clang seems okay with the cutoff we have, though. Discussion: https://postgr.es/m/CAPpHfdsne3%3DT%3DfMNU45PtxdhSL_J2PjLTeS8rwKnJzUR4YNd4w%40mail.gmail.com Discussion: https://postgr.es/m/475514.1612745257%40sss.pgh.pa.us
diff --git a/src/include/c.h b/src/include/c.h
@@ -138,7 +138,7 @@
  * Testing can be done with "-fsanitize=alignment -fsanitize-trap=alignment"
  * on clang, or "-fsanitize=alignment -fno-sanitize-recover=alignment" on gcc.
  */
-#if __clang_major__ >= 7 || __GNUC__ >= 5
+#if __clang_major__ >= 7 || __GNUC__ >= 8
 #define pg_attribute_no_sanitize_alignment() __attribute__((no_sanitize("alignment")))
 #else
 #define pg_attribute_no_sanitize_alignment()
